An aerial photo of a Nazca line in the shape of a hummingbird.

Animal mounds and other geoglyphs called the Nazca Lines are considered a World Heritage Site in the Nazca Desert in southern Peru. Here, we see Nazca Lines resembling a hummingbird, as viewed from a plane. (Image credit: Shutterstock)

The Nazca lines are located in an arid coastal area ofPeru that covers an estimated 170 square miles.

There is a number on the ground that depicts creatures from both the natural world and the imagination. There are animals such as the spider, hummingbird, monkey, lizard, pelican and a killer whale. Plants, trees, flowers and oddly shaped fantastic figures were depicted by ancient artisans.

How old are the Nazca Lines?

The majority of the lines are from 200 B.C. to 500 A.D. As far back as 500 B.C., the earliest lines were created with piles of stones.

It took archaeologists about one week to refurbish the ancient cat outline.

A Nazca Line in the shape of a cat on a hillside in Peru. The lines of this cat have been refurbished, making them easier to see. (Image credit: Johny Isla/Ministerio de Cultura)

Who made the Nazca Lines?

Engineering techniques were used to bring underground water to the surface in the past. The need for water is connected to the purpose of the lines.

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Cahuachi is one of the largest settlements and it overlooks some of the lines. Pyramids made of adobe are among the mounds.

A processed image of a geoglyph featuring a person who appears to have long hair and arms that stick out in greater detail.

A processed image of a geoglyph featuring a person who appears to have long hair and arms that stick out. (Image credit: Yamagata University)

In 1927, the first study and report of the Nazca lines was done by an archaeologist from the country of Peru. The lines became better known in the 1930s as air traffic in the area increased.

The myth is that the lines can only be seen from the air. According to research presented in 2007, each and every geoglyph can be seen from the ground.

The researchers have been looking for the lines for a long time. In 2020, archaeologists found the outline of a massive cat that was about 121 feet long, and in 2022, scientists discovered 168 smaller and fainter geoglyphs. A person's head was falling away from them.

This processed image shows a geoglyph of what may be a person holding what looks like a club or stick as their head flies away in greater detail.

This processed image shows a geoglyph of what may be a person holding what looks like a club or stick as their head flies away. (Image credit: Yamagata University)

Theories and significance of the Nazca Lines

Researchers still don't know the purpose of the lines. No written records were left by the Nazca culture.

One idea is that the sky is connected to the heavens with some of the lines representing stars in the night sky. The lines play a role in pilgrimage, with one walking across them to reach a sacred place such as Cahuachi. One idea is that the lines are connected with water and may have played a part in water-based rituals.

There is no archaeological proof for the idea that the Nazca people used balloons to observe the lines from up high.